Radiator



(No Model.)

. J. A. PRINDLE.

RADIATOR. No. 392,932. Patented Nov. 13, 1888.

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JOHN A. PRINDLE, OF CLEVELAND, OHIO.

RADIATOR.

SPECIFICATION forming part of Letters Patent No. 392,932, dated November13, 1888.

Application filed August 1, 1888. Serial No. 281,682. (No model.)

To aZZ whom it may concern.-

Be it known that I, JOHN A. PRINDLE, of Cleveland, in the county ofOuyahoga and State of Ohio, have invented certain new and usefulImprovements in Radiators; and I do hereby declare the following to be afull, clear, and

exact description of the invention, such as will enable others skilledin the art to which it pertains to make and use the same.

My invention relates to improvements in sectional radiators in which thenipples for connecting the different sections are divided by internaldiaphragms into two longitudinal compartments, the end sections of thenipples below the diaphragm being cut away, leaving the lowerpassage-way of the nipple in open relation with the chamber of each legof the radiator-section, while the walls of the nipple above thediaphragm are cut away in part only, so that the upper passageway of thenipple is in open communication with the chamber of only one leg of aradiator-section, to the end that with such construction bettercirculation is had, and consequently the radiator has betterheat-radiating qualities.

In the accompanying drawings, Figures 1 and 2 are respectively side andend elevations of radiator sections detached, portions being broken awayto show the construction and to reduce the size of the figures. Fig. 3is a reduced elevation showing different sections connected. Fig. 4 is aside elevation of nipple.

The radiator-sections shown in Figs. l and 2 consist ofreturn-bends Aand A, connected by tubular legs 13; but the sections, if preferred, maybe wholly of cast metalfor instance, as shown at the right hand in Fig3. Each radiator-section has threaded holes a, for connecting thedifferent sections by means of nipples 0. Each nipple has an internallongitudinal partition or diaphragm, a, cast in and extending from endto end of the nipple, such diaphragms, when the nipples are screwed in,extending in the horizontai position shown in Fig. 1. The opposingnipples are intended to meet at the center of a section, as shown inFig. 2, and the end portions of a nipple that extend inside aradiator-section are cut away for about three-quarters of thecircumference thereof, the remaining quarter, 0, commencing at thediaphragm on the one side and extending to about the top of the nipple.The passage-way d, through the nipple above the diaphragm c, istherefore closed as against the chamber in the one leg of theradiatorsection, as shown on the right hand in Fig. 1, while passage-wayd is in open relation with the chamber of the other leg of theradiator-section. The passageway d, that extends through the nipplebelow diaphragm c, is in open relation with the chambers of both legs ofthe radiator. The steam, on entering the radiator at the induction endthereof, at first, of course, fills both passageways d and d aboutalike. The heavier steam and condensed water soon gravitate to the lowerpassage-way, (1, while the drier steam rises to the upper passage-Way,d, and from thence, the dry steam having egress only to the chamber inthe one leg of the radiator-section, a current of steam is at onceestablished up through such leg and down through the opposite leg, thecondensed water of course gravitating to and flowing along thepassage-way d toward the eduction end of the radiator. The result isthat an active current of steam or other heating medium is establishedthrough the radiator with corresponding radiation of heat.

In case hot water is used in the radiator as a heating medium, it mightin some cases be of advantage to connect the upper returnbends by means,for instance, of ordinary nipples, a suitable location for the threadedholes necessary for such purpose being shown in dotted lines at a, Fig.1.

What I claim is 1. In a sectional radiator, a nipple for connecting thedifferent sections, such nipple having internal diaphragm dividing thenipple into upper and lower passage-ways, the end portions of the nipplebeing cut away, substantially as shown, leaving the lower passageway ofthe nipple in open relation with the chambers in both legs of theradiator-section, while the upper passage-way of the nipple connectswith the chamber of only one leg of the radiator-section, substantiallyas set forth.

2. The combination, with radiator-sections,

substantially as indicated, of nipples for connecting the differentsections, each nipple having two passage-ways, upper and lower, thelower passage-way connecting with the cham her in each leg of theradiator-section and the upper passage-way connecting only with thechamber in oneleg of the radiator-section, snbstantiztlly as set forth.

In testimony whereofl signthis specification, in the presence of twowitnesses, this 6th day :0 of J uly, 1888.

JOHN A. PRINDLE.

Witnesses:

Guns. I-I. Donne, ALBERT E. LYNCH.

